It is a very interesting point you have bought up as I have often wondered about it. Both my sister and I were bought up on pure cows milk and goats milk right from birth as Mum couldnt breastfeed and we lived in a tiny tiny tiny town on the west coast of NZ and formula wasnt readily available. Unlike most of our friends/cousins, neither my sister nor I have any allergies/intolerances or any health problems whatsoever and have often wondered if this had anything to do with it???